123442880 has 56 divisors (see below), whose sum is σ = 320680080. Its totient is φ = 44887040.

The previous prime is 123442873. The next prime is 123442889. The reversal of 123442880 is 88244321.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (123442889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14015 + ... + 21054.

It is an arithmetic number, because the mean of its divisors is an integer number (5726430).

Almost surely, 2^123442880 is an apocalyptic number.

123442880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123442880 is an abundant number, since it is smaller than the sum of its proper divisors (197237200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123442880 is a wasteful number, since it uses less digits than its factorization.

123442880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35097 (or 35087 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 123442880 is about 11110.4851379226. The cubic root of 123442880 is about 497.9151589582.

The spelling of 123442880 in words is "one hundred twenty-three million, four hundred forty-two thousand, eight hundred eighty".